A009186 - OEIS

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A009186

Expansion of cosh(x)/exp(tan(x)).

1, -1, 2, -6, 16, -72, 328, -1848, 11712, -81088, 638720, -5318016, 49459840, -483162240, 5159926528, -57865303296, 697030680576, -8815813734400, 118233272496128, -1662921003208704, 24578235697610752, -380141599264751616 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	MATHEMATICA	`Cosh[ x ]/Exp[ Tan[ x ] ]`
	CROSSREFS	`Sequence in context: A009386 A009605 A009681 * A009328 A009346 A009367` `Adjacent sequences: A009183 A009184 A009185 * A009187 A009188 A009189`
	KEYWORD	`sign,easy`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net)`
	EXTENSIONS	`Extended with signs Mar 15 1997 by Olivier Gerard.`

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Last modified February 17 21:13 EST 2012. Contains 206085 sequences.